Home / 13,708.22-20,511.81-12,135.74

Finding the Fourth Proportional to 13,708.22, 20,511.81 and 12,135.74

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Solution

The fourth proportional to 13,708.22, 20,511.81 and 12,135.74 is: 18,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.22 : 20,511.81 = 12,135.74 : x
  2. Step 2: Convert to fraction form
    13,708.22/20,511.81 = 12,135.74/x
  3. Step 3: Cross multiply
    13,708.22x = 20,511.81 × 12,135.74
  4. Step 4: Simplify right side
    13,708.22x = 248,925,890.53
  5. Step 5: Solve for x
    x = 248,925,890.53/13,708.22
  6. Step 6: Final answer
    x = 18,158.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.